• SHIJIAZHUANG DEYE PIPING INDUSTRY CO., LTD(Pipefittings Department)
    Ms.Suwen Lim
    It is really a pleasure cooperation. You are fast understanding and knowlegeable, also your Check valves worked well. We believe that we will have a great chance to cooperate more.
  • SHIJIAZHUANG DEYE PIPING INDUSTRY CO., LTD(Pipefittings Department)
    Mr. Loredana Doganieri
    Tks for your consisent support for more than 10 years. Your diligence, professional technical support and rich experience in the pipeline projects has biggly help the business between us. Together we will win more and more tenders in the future. Best Regards to you and your team, and finally Come on DEYE Piping team!
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    Mr. Yasser Nashwan
    You are honnesty and very reliable parnter, tks for your support on the technical data sheets and addtional works to fast the delivery time. Your professional answers are always impressed. also Your products are beautiful. We apprecite all the offorts you have done for the years business.
  • SHIJIAZHUANG DEYE PIPING INDUSTRY CO., LTD(Pipefittings Department)
    Mr. Waseem Akram
    You are Excellent, especially the quanlity control step by step, We've got all the photos and videos we want. and the documents we received all meet the request. Our boss is very Satisfied and he said he will give you more orders. We like your professional and fast jobs.
  • SHIJIAZHUANG DEYE PIPING INDUSTRY CO., LTD(Pipefittings Department)
    Mr. Gonzalo Jara
    The mould you opened for the valve are good, the new types of butterfly valves is popular. It will biggly increase the business between us. Tks for your suggestions on the flange holes. The valves are in good finishing and well packaged when we received them. Thank you, my friend.
  • SHIJIAZHUANG DEYE PIPING INDUSTRY CO., LTD(Pipefittings Department)
    Mr. ilya Sabansky
    The end user is safisfied with your A234WPB fittings and A105 Flanges, the have finished the welding at present, all works well.Tks for your professional suggestions and the operation manual. We also won the 2nd Phase job, we have sent to you this morning, Pls confirm all the specifications to proceed.
Contact Person : Maria Lee
Phone Number : +8613292824811
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SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s

Place of Origin CHINA
Brand Name DEYE
Certification ISO9001:2015 PED
Model Number PF-CTEE-SS-01
Minimum Order Quantity 10PCS
Price USD2-10 for small sizes
Packaging Details plastic bag+cartons+ply wooden cases
Delivery Time 5-8 days for stock items
Supply Ability 100000 pcs month

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Product Details
Material SS316L, SS316, SS304L, SS304, SS321,DUPLEX SS2205, 2507 Connection Butt Welded BW
Thickness Sch5s, Sch10s, Sch40s, Sch80s, Sch160, Xs,xxs Surface Pickling, Polish
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SS321 stainless steel cross fitting

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SS304 socket weld cross

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Product Description

SS316 304 321 201 Stainless Steel Pipe Fittings Cross Tee With SCH40S SCH10s

Brief Introduction

 

Stainless Steel Pipefittings: The ASME/ANSI B16.9 specification covers the dimensions and the tolerances of carbon and alloy butt weld fittings. The MSS-SP 43 specification integrates ASME B16.9 to cover stainless steel and nickel alloy pipe fittings. In this article, we show the dimensions and weights of buttweld elbows, tees, and reducers.  Tolerances of butt weld fittings (in inches) according to ASME/ANSI B16.9. for all carbon alloy fittings except short radius elbows and returns (ASME/ANSI B16.28).

 

The details Specification as below:

 

 

Products Name ANSI B16.9 BW SS Smsl seamless and welded Pipe Fitting
Types

Traight Tee, Equal Tee, Long Raduis Elbows, Short Raduis Elbow, 180deg bends,  Returns, Reducing Eblows,Concentric. Reducers, Eccentric. redcuers, Y tees, caps, Stub Ends,

Size 1/2"-72"  DN15-DN1800
Wall Thickness

SCH5S,SCH10s,SCH20S,SCH30,STD,SCH40S,SCH60,XS,SCH80S,SCH100,

SCH120,SCH160S,XXS, DIN, SGP JIS thickness

Design Standard ASTMA312, ASTM A403WP, A234WPB A420, ANSI B16.9/B16.28/B16.25
 
JIS B2311-1997/2312, JIS B2311/B2312, DIN 2605-1/2617/2615,
 
GB 12459-99,EN Standard etc.
Material List Stainless Steel304, 304L, 304H, 316, 316L, 316H, 310, SS321, SS321H, 347, 347H, 904L
Duplex SS 2507, DSS2205, UNS31803 UNS32750, UNS32760
 
1.4301,1.4306, 1.4401, 1.4435, 1.4406, 1.4404, 1.4462, 1.4410, 1.4501
 
Carbon Steel A234 WPB, WP5, WP9,WP11, WP22, A420WPL6, A420WPL8
ST37.0,ST35.8,ST37.2,ST35.4/8,ST42,ST45,ST52,ST52.4
 
STP G38,STP G42,STPT42,STB42,STS42,STPT49,STS49
 
Surface Acid pickling, Polished
Application/Usage Low and middle pressure fluid pipeline,boiler, petroleum and natural gas industry, drilling,chemical industry, electric industry,shipbuilding,fertilizer equipment and pipeline, structure,petrochemical,pharmaceutical industry,etc.

 

Thickness List as per ANSI B16.9, MSS SP-44

 

Norminal Pipe Size DN (in) Outside Dimeter D Norminal Wall Thickness (MM)
Sch5s Sch10S Sch10 Sch40s Sch40 Sch80s Sch80 Schl20 Sch160 XXS
1/8 10. 3 —— 1. 24 —— 1. 73 1. 73 2. 41 2. 41 —— —— ——
1/4 13. 7 1. 65 2. 24 2. 24 3. 02 3. 02
3/8 17. 1 1. 65 2. 31 2. 31 3. 20 3. 20
1/2 21. 3 1.65 2. 11 —— 2. 77 2. 77 3. 73 3. 73 —— 4. 78 7. 47
3/4 26. 7 1.65 2. 11 —— 2. 87 2. 87 3. 91 3. 91 —— 5. 56 7. 82
1 33.4 1. 65 2. 77 3. 38 3. 38 4. 55 4. 55 6. 35 9. 09
1 1/4 42. 2 1.65 2. 77 3. 56 3. 56 4. 85 4. 85 6. 35 9. 70
1 1/2 48. 3 1.65 2. 77 —— 3. 68 3. 68 5. 08 5. 08 —— 7. 14 10. 15
2 60. 3 1. 65 2. 77 —— 3. 91 3. 91 5. 54 5. 54 —— 8. 74 11. 07
2 1/2 73. 0 2. 11 3. 05 5. 16 5. 16 7. 01 7.01 9. 53 14. 02
3 88. 9 2. 11 3. 05 5. 49 5. 49 7. 62 7. 62 11. 13 15. 24
3 1/2 101. 6 2. 11 3. 05 —— 5. 74 5. 74 8. 08 8. 08 —— —— ——
4 114. 3 2. 11 3. 05 —— 6. 02 6. 02 8. 56 8. 56 11. 13 13. 49 17. 12
5 141. 3 2. 77 3. 40 6. 55 6. 55 9. 53 9. 53 12. 70 15. 88 19. 05
6 168. 3 2. 77 3. 40 7. 11 7. 11 10. 97 10. 97 14. 27 18. 26 21.95
8 219. 1 2. 77 3. 76 —— 8. 18 8. 18 12. 70 12. 70 18. 26 23. 01 22.23
10 273. 1 3. 40 4. 19 —— 9. 27 9.27 12. 70 15. 09 21. 44 28. 58 25. 40
12 323.9 3. 96 4. 57 9. 53 10. 31 12. 70 17. 48 25. 40 33. 32 25. 40
14 355. 6 3. 96 4. 78 6. 35 11. 13 19. 05 27. 79 35. 71
16 406. 4 4. 19 4. 78 6. 35 —— 12. 70 —— 21. 44 30. 96 40. 49 ——
18 457. 2 4. 19 4. 78 6. 35 —— 14. 27 —— 23. 83 34. 96 45. 24 ——
20 508. 0 4. 78 5. 54 6. 35 15. 09 26. 19 38. 10 50. 01
22 558. 8 4. 78 5. 54 6. 35 28. 58 41. 28 53. 98
24 609. 6 5. 54 6. 35 6. 35 —— 17. 48 —— 30. 96 46. 02 59. 54 ——
26 660.4 —— —— 7. 92 —— —— —— —— —— —— ——
28 711.2 7. 92
30 762. 0 6. 35 7. 92 7. 92
32 812. 8 —— —— 7. 92 —— 17. 48 —— —— —— —— ——
34 863. 6 —— —— 7. 92 —— 17. 48 —— —— —— —— ——
36 914. 4 7. 92 17. 48
38 965.2
40 1016. 0 —— —— —— —— —— —— —— —— —— ——
42 1066. 8 —— —— —— —— —— —— —— —— —— ——
44 1117. 6
46 1168.4
48 1219. 2

 

                     Dimensions of Straight Tees and Crosses

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 0

 

                                      

      

Nominal Pipe Size (NPS) Outside Diameter at Bevel Center-to-End
Run, C Outlet, M [Notes (1) and (2)]
72 21.3 25 25
% 26.7 29 29
1 33.4 38 38
174 42.2 48 48
i72 48.3 57 57
2 60.3 64 64
272 73.0 76 76
3 88.9 86 86
372 101.6 95 95
4 114.3 105 105
5 141.3 124 124
6 168.3 143 143
8 219.1 178 178
10 273.0 216 216
12 323.8 254 254
14 355.6 279 279
16 406.4 305 305
18 457.0 343 343
20 508.0 381 381
22 559.0 419 419
24 610.0 432 432
26 660.0 495 495
28 711.0 521 521
30 762.0 559 559
32 813.0 597 597
34 864.0 635 635
36 914.0 673 673
38 965.0 711 711
40 1 016.0 749 749
42 1 067.0 762 711
44 1 118.0 813 762
46 1 168.0 851 800
48 1 219.0 889 838

 

Dimensions of Reducing Outlet Tees and Reducing Outlet Crosses

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 1

 

Nominal Pipe Size (NPS) Outside Diameter at Bevel Center-to-End Nominal Pipe Size (NPS) Outside Diameter at Bevel Center-to-End
Run, C Outlet, M [Note (1)] Run, C Outlet, M [Note (1)]
Run Outlet Run Outlet
1/2 x1/2 x3/8 21.3 17.3 25 25 4 x 4 x 3-1/2 114.3 101.6 105 102
1/2 x1/2 x1/4 21.3 13.7 25 25 4x4x3 114.3 88.9 105 98
3/4 x 3/4 x1/2 26.7 21.3 29 29 4 X 4 X 2-1/2 114.3 73.0 105 95
3/4 x 3/4 x3/8 26.7 17.3 29 29 4x4x2 114.3 60.3 105 89
1 X 1 X 3/4 33.4 26.7 38 38 4 x 4 x 1-1/2 114.3 48.3 105 86
1 x 1 x 1/2 33.4 21.3 38 38          
          5X5X4 141.3 114.3 124 117
1-1/4 x 1-1/4 x 1 42.2 33.4 48 48 5 X 5 X 3-1/2 141.3 101.6 124 114
1-1/4 x 1-1/4 x3/4 42.2 26.7 48 48 5X5X3 141.3 88.9 124 111
1-1/4 x 1-1/4 x1/2 42.2 21.3 48 48 5 X 5 X 2-1/2 141.3 73.0 124 108
          5X5X2 141.3 60.3 124 105
1-1/2 x1-1/2 x 1-1/4 48.3 42.2 57 57 6X6X5 168.3 141.3 143 137
1-1/2 x1-1/2 x 1 48.3 33.4 57 57 6x6x4 168.3 114.3 143 130
1-1/2 x1-1/2 x3/4 48.3 26.7 57 57 6 x 6 x 3-1/2 168.3 101.6 143 127
1-1/2 x1-1/2 x 1/2 48.3 21.3 57 57 6x6x3 168.3 88.9 143 124
          6 x 6 x 2-1/2 168.3 73.0 143 121
2 x 2 x 1-1/2 60.3 48.3 64 60          
2 x 2 x 1-1/4 60.3 42.2 64 57 8x8x6 219.1 168.3 178 168
2 X 2 X 1 60.3 33.4 64 51 8x8x5 219.1 141.3 178 162
2 x 2 x 3/4 60.3 26.7 64 44 8X8X4 219.1 114.3 178 156
          8 x 8 x 3-1/2 219.1 101.6 178 152
2-1/2 X 2-1/2 X 2 73.0 60.3 76 70          
2-1/2 X 2-1/2 X 1-1/2 73.0 48.3 76 67 10 x 10 x 8 273.0 219.1 216 203
2-1/2 X 2-1/2 X 1-1/4 73.0 42.2 76 64 10 x 10 x 6 273.0 168.3 216 194
2-1/2 X 2-1/2 X 1 73.0 33.4 76 57 10 x 10 x 5 273.0 141.3 216 191
          10 x 10 x 4 273.0 114.3 216 184
3 X 3 X 2-1/2 88.9 73.0 86 83 12 x 12 x 10 323.8 273.0 254 241
3x3x2 88.9 60.3 86 76 12 x 12 x 8 323.8 219.1 254 229
3 x 3 x 1-1/2 88.9 48.3 86 73 12 X 12 X 6 323.8 168.3 254 219
3 x 3 x 1-1/4 88.9 42.2 86 70 12 x 12 x 5 323.8 141.3 254 216
3-1/2 x 3-1/2 x 3 101.6 88.9 95 92 14 X 14 X 12 355.6 323.8 279 270
3-1/2 x 3-1/2 x 2-1/2 101.6 73.0 95 89 14 X 14 X 10 355.6 273.0 279 257
3-1/2 x 3-1/2 x 2 101.6 60.3 95 83 14 X 14 X 8 355.6 219.1 279 248
3-1/2 x 3-1/2 x 1-1/2 101.6 48.3 95 79 14 x 14 x 6 355.6 168.3 279 238

 

 

Size (NPS) Outside Diameter at Bevel Center to Ends Nominal Pipe Size (NPS) Outside Diameter at Bevel Center to Ends
Run Outlet Run, C Outlet, M [Note (1)] Run Outlet Run, C Outlet, M [Note (1)]
16 x 14 406.4 355.6 305 305 28 X 28 X 26 711 660.0 521 521
16 x 12 406.4 323.8 305 295 28 X 28 X 24 711 610.0 521 508
16 x 10 406.4 273.0 305 283 28 x 28 x 22 711 559.0 521 495
16 x 8 406.4 219.1 305 273 28 x 28 x 20 711 508.0 521 483
16 x 6 406.4 168.3 305 264          
          28 X 28 X 18 711 457.0 521 470
18 x 16 457.0 406.4 343 330 28 X 28 X 16 711 406.4 521 457
18 x 14 457.0 355.6 343 330 28 x 28 x 14 711 355.6 521 457
18 X 12 457.0 323.8 343 321 28 X 28 X 12 711 323.8 521 448
18 x 10 457.0 273.0 343 308          
18 X 8 457.0 219.1 343 298 30 X 30 X 28 762 711.0 559 546
          30 x 30 x 26 762 660.0 559 546
20 X 18 508.0 457.0 381 368 30 x 30 x 24 762 610.0 559 533
20 x 16 508.0 406.4 381 356 30 x 30 x 22 762 559.0 559 521
20 x 14 508.0 355.6 381 356 30 x 30 x 20 762 508.0 559 508
20 X 12 508.0 323.8 381 346          
20 X 10 508.0 273.0 381 333 30 x 30 x 18 762 457.0 559 495
20 X 8 508.0 219.1 381 324 30 x 30 x 16 762 406.4 559 483
          30 x 30 x 14 762 355.6 559 483
22 X 20 559.0 508.0 419 406 30 x 30 x 12 762 323.8 559 473
22 x 18 559.0 457.0 419 394 30 x 30 x 10 762 273.0 559 460
22 x 16 559.0 406.4 419 381          
22 X 14 559.0 355.6 419 381 32 x 32 x 30 813 762.0 597 584
22 X 12 559.0 323.8 419 371 32 X 32 X 28 813 711.0 597 572
22 X 10 559.0 273.0 419 359 32 X 32 X 26 813 660.0 597 572
          32 x 32 x 24 813 610.0 597 559
24 X 22 610.0 559.0 432 432          
24 X 20 610.0 508.0 432 432 32 X 32 X 22 813 559.0 597 546
24 X 18 610.0 457.0 432 419 32 X 32 X 20 813 508.0 597 533
          32 X 32 X 18 813 457.0 597 521
24 X 16 610.0 406.4 432 406 32 x 32 x 16 813 406.4 597 508
24 X 14 610.0 355.6 432 406 32 X 32 X 14 813 355.6 597 508
24 X 12 610.0 323.8 432 397          
24 x 10 610.0 273.0 432 384 34 x 34 x 32 864 813.0 635 622
          34 x 34 x 30 864 762.0 635 610
26 X 24 660.0 610.0 495 483 34 x 34 x 28 864 711.0 635 597
26 x 22 660.0 559.0 495 470 34 x 34 x 26 864 660.0 635 597
26 X 20 660.0 508.0 495 457          
          34 x 34 x 24 864 610.0 635 584
26 x 18 660.0 457.0 495 444 34 x 34 x 22 864 559.0 635 572
26 X 16 660.0 406.4 495 432 34 x 34 x 20 864 508.0 635 559
26 x 14 660.0 355.6 495 432 34 x 34 x 18 864 457.0 635 546
26 X 12 660.0 323.8 495 422 34 x 34 x 16 864 406.4 635 533

 

The most common used material for ss butt welded pipefittings is SS304/304L, SS316/316L, DUPLEX SAF2507, SAF2205,

Detail’s specification of the material as below.

 

Material Analysis

 

 

304/304L (UNS S30400/S30403)

Chemical Composition%

 

C Cr Mn Ni P S Si
-- --
0.035 18.0-20.0 2.00 8.0-13.0 0.045 0.03 1.00

 

 

 

Tensile Strength: ≥ 485 Mpa (70KSI)

Yield Strength: ≥170Mpa (25KSPI)

Elongation ≥ 40%

 

316/316L (UNS S31600/S31603)

Chemical Composition%

C Cr Mn Mo Ni P S Si
--   --
0.035 16.0-18.0 2.00 2.0-3.0 10.0-14.0 0.045 0.03 1.00

 

Tensile Strength: ≥ 485 Mpa (70KSI)

Yield Strength: ≥170Mpa (25KSPI)

Elongation ≥ 40%

 

SAF2205 (UNS31803)

 

C≤ Si ≤ Mn≤ P ≤ S ≤ Cr Ni Mo Cu N
0.03 1.0 2.0 0.03 0.02 22-23 4.5-6.5 3.0-3.50 /

0.14-0.2

 

 

SAF2205 Material Mechnical Performance

Test Items Test Temp. Performance Standard Data
Tensile Strength Room Temp. Yield Strength s≥ 450 Mpa
Tensile Strength h ≥ 620 Mpa
Elongation % > 25
Reduction of Area=> /
Impact Value KV(J) Room Temp.  Lateral /
Brinell hardness Room Temp. 290
Rockwell hardness Room Temp. /

 

Duplex SS SAF2507(UNS32750)

 

c ≤ Si≤ Mn≤ P≤ S≤ Cr Ni Mo Cu≤ N
0.03 0.8 1.2 0.03 0.015 24-26 6.0-8.0 3.0-5.0 0.5 0.24-0.32

 

Mechanical Peformance 

Test Items Test Temp. Performance Standard Data
Tensile Room Temp. Yield Strength Ø≤55 Rm≥ 550 Mpa
Ø >55 Rm≥ 515 Mpa
Tensile Strength Ø≤55 R0.002 ≥ 800 Mpa
Ø >55 R0.002≥ 760 Mpa
Elongation A%(4D) > Ø≤55 ≥ 15
Ø >55 ≥ 15
Brinell hardness HB Room Temp. Ø≤5 ≤ 310
Ø >55 ≤ 310

 

Designation: A 403/A 403M – 06 Standard Specification for Wrought Austenitic Stainless-Steel Piping Fittings

 

Other Referenced Documents

ASTM Standards: 

A 351/A 351M Specification for Castings, Austenitic, for Pressure-Containing Parts

A 370 Test Methods and Definitions for Mechanical Testing of Steel Products

A 480/A 480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip

A 743/A 743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

A 744/A 744M Specification for Castings, Iron-Chromium Nickel, Corrosion Resistant, for Severe Service

A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

A 960/A 960M Specification for Common Requirements for Wrought Steel Piping Fittings

E 112 Test Methods for Determining Average Grain Size

E 165 Test Method for Liquid Penetrant Examination

 

 ASME Standards:

ASME B16.9 Factory-Made Wrought Steel Butt-Welding Fittings

ASME B16.11 Forged Steel Fittings, Socket-Welding and Threaded ends

 

MSS Standards: MSS SP-25 Standard Marking System for Valves, Fittings,

Flanges, and Unions

MSS SP-43 Standard Practice for Light Weight Stainless Steel Butt-Welding Fittings

MSS SP-79 Socket-Welding Reducer Inserts

 

 Production Process 

 

1. Raw material Receiving and Cutting

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 2

 

2. Material Identification

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 3

 

3. Elbows, Tees ,reducers, Caps, stub ends, kinds of pipefittings shape forming

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 4

 

4. Material wedling process (welded elbows )

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 5

 

5. Heat Treatment for SS pipefittings

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 6

 

6. Shot Blast and cleaning

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 7

 

7. Surface checking

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 8

 

8. After Polished

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 9

 

9. stainless steel Pipefittings Material In Stock

 

SS304 SS321 SS316 Stainless Steel Cross Fitting With SCH40S SCH10s 10

 

FAQ

 

Q:Customer asked for butt weld fittings in A105:
A: Most common carbon steel buttweld fitting material is A234WPB. It is equivalent to A105 flanges, however there is no such thing as an A105 or A106 butt weld fitting.
A106 Gr.B is for pipe grade. The A234WPB fittings are made from A106GR.B pipes. A105 is a material from Bar forged to be High pressure Fittings or Flange


Q: Customer requests “Normalized” butt weld fittings:
A: This is also a misconception since flanges are available in A105 and A105 N, where N stands for normalized.
However, there is no such thing as A234WPBN. Manufactures normalize their butt weld fittings was considered that normalized heat treating process was done, Espeically for the elbows and Tees
Customer needing “normalized” butt weld fittings should request WPL6 fittings which are high yield and are normalized as a standard procedure.


Q: Customer forgets to mention pipe schedule:
A: Buttweld fittings are sold as per pipe size but pipe schedule must be specified to match the ID of the fitting to the ID of the pipe. If no schedule is mentioned, we will assume a standard wall is requested.

 

Q; Customer forgets to mention welded or seamless butt weld fitting:
Butt weld fittings are available in both welded and seamless configuration. A seamless butt weld carbon steel or stainless steel fitting is made of seamless pipe and is generally more expensive.
Seamless pipe fittings are NOT common in sizes bigger than 12”. Welded pipe fittings are made of ERW welded carbon steel or stainless steel pipe. They are available in sizes ½” to 72” and are more affordable than seamless fittings.


Q: What does Short Radius (SR) or Long Radius (LR) means?
A: You will often hear SR45 elbow or LR45 elbow. The 45 or 90 refers to the angle of the bend for buttweld fitting to change the direction of flow.
A long radius elbow (LR 90 Elbow or LR 45 elbow) will have a pipe bend that will be 1.5 times the size of the pipe. So, a 6 inch LR 90 has bending radius that is 1.5 x nominal pipe size.
A short radius elbow (SR45 or SR90) has a pipe bend that is equal to the size of the fitting, so a 6” SR 45 has a bending radius that is 6” nominal pipe size.

Q: What is a 3R or 3D elbow pipe fitting?
A: First, the terms 3R or 3D are used synonymously. A 3R butt weld elbow has a bending radius that is 3 times the nominal pipe size. A 3R elbow is equal to 3D Elbows

 

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